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add unicast support

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This commit is contained in:
Luke Pulverenti 2016-02-13 14:41:19 -05:00
parent d48ba8dbc1
commit 629fdfe16f
1 changed files with 135 additions and 19 deletions
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154
MediaBrowser.Dlna/Ssdp/SsdpHandler.cs
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@ -21,7 +21,7 @@ namespace MediaBrowser.Dlna.Ssdp
{
public class SsdpHandler : IDisposable, ISsdpHandler
{
private Socket _socket;
private Socket _multicastSocket;
private readonly ILogger _logger;
private readonly IServerConfigurationManager _config;
@ -40,6 +40,9 @@ namespace MediaBrowser.Dlna.Ssdp
private readonly IApplicationHost _appHost;
private readonly int _unicastPort = 1901;
private UdpClient _unicastClient;
public SsdpHandler(ILogger logger, IServerConfigurationManager config, IApplicationHost appHost)
{
_logger = logger;
@ -123,6 +126,8 @@ namespace MediaBrowser.Dlna.Ssdp
RestartSocketListener();
ReloadAliveNotifier();
//CreateUnicastClient();
SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged;
SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
}
@ -150,19 +155,22 @@ namespace MediaBrowser.Dlna.Ssdp
// Seconds to delay response
values["MX"] = "3";
var header = "M-SEARCH * HTTP/1.1";
var msg = new SsdpMessageBuilder().BuildMessage(header, values);
// UDP is unreliable, so send 3 requests at a time (per Upnp spec, sec 1.1.2)
SendDatagram("M-SEARCH * HTTP/1.1", values, _ssdpEndp, localIp, true, 2);
SendDatagram(msg, _ssdpEndp, localIp, true, 3);
//SendUnicastRequest(msg);
}
public async void SendDatagram(string header,
Dictionary<string, string> values,
public async void SendDatagram(string msg,
EndPoint endpoint,
EndPoint localAddress,
bool isBroadcast,
int sendCount)
{
var msg = new SsdpMessageBuilder().BuildMessage(header, values);
var enableDebugLogging = _config.GetDlnaConfiguration().EnableDebugLog;
for (var i = 0; i < sendCount; i++)
@ -232,8 +240,10 @@ namespace MediaBrowser.Dlna.Ssdp
values["ST"] = d.Type;
values["USN"] = d.USN;
SendDatagram(header, values, endpoint, null, false, 1);
SendDatagram(header, values, endpoint, new IPEndPoint(d.Address, 0), false, 1);
var msg = new SsdpMessageBuilder().BuildMessage(header, values);
SendDatagram(msg, endpoint, null, false, 1);
SendDatagram(msg, endpoint, new IPEndPoint(d.Address, 0), false, 1);
//SendDatagram(header, values, endpoint, null, true);
if (enableDebugLogging)
@ -253,7 +263,7 @@ namespace MediaBrowser.Dlna.Ssdp
try
{
_socket = CreateMulticastSocket();
_multicastSocket = CreateMulticastSocket();
_logger.Info("MultiCast socket created");
@ -274,8 +284,7 @@ namespace MediaBrowser.Dlna.Ssdp
EndPoint endpoint = new IPEndPoint(IPAddress.Any, SSDPPort);
_socket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref endpoint, ReceiveCallback,
buffer);
_multicastSocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref endpoint, ReceiveCallback, buffer);
}
catch (ObjectDisposedException)
{
@ -301,7 +310,7 @@ namespace MediaBrowser.Dlna.Ssdp
{
EndPoint endpoint = new IPEndPoint(IPAddress.Any, SSDPPort);
var length = _socket.EndReceiveFrom(result, ref endpoint);
var length = _multicastSocket.EndReceiveFrom(result, ref endpoint);
var received = (byte[])result.AsyncState;
@ -325,7 +334,7 @@ namespace MediaBrowser.Dlna.Ssdp
var headerTexts = args.Headers.Select(i => string.Format("{0}={1}", i.Key, i.Value));
var headerText = string.Join(",", headerTexts.ToArray());
_logger.Debug("{0} message received from {1} on {3}. Headers: {2}", args.Method, args.EndPoint, headerText, _socket.LocalEndPoint);
_logger.Debug("{0} message received from {1} on {3}. Headers: {2}", args.Method, args.EndPoint, headerText, _multicastSocket.LocalEndPoint);
}
OnMessageReceived(args);
@ -342,7 +351,7 @@ namespace MediaBrowser.Dlna.Ssdp
_logger.ErrorException("Failed to read SSDP message", ex);
}
if (_socket != null)
if (_multicastSocket != null)
{
Receive();
}
@ -375,17 +384,18 @@ namespace MediaBrowser.Dlna.Ssdp
_isDisposed = true;
DisposeUnicastClient();
DisposeSocket();
StopAliveNotifier();
}
private void DisposeSocket()
{
if (_socket != null)
if (_multicastSocket != null)
{
_socket.Close();
_socket.Dispose();
_socket = null;
_multicastSocket.Close();
_multicastSocket.Dispose();
_multicastSocket = null;
}
}
@ -436,7 +446,9 @@ namespace MediaBrowser.Dlna.Ssdp
_logger.Debug("{0} said {1}", dev.USN, type);
}
SendDatagram(header, values, _ssdpEndp, new IPEndPoint(dev.Address, 0), true, sendCount);
var msg = new SsdpMessageBuilder().BuildMessage(header, values);
SendDatagram(msg, _ssdpEndp, new IPEndPoint(dev.Address, 0), true, sendCount);
}
public void RegisterNotification(Guid uuid, Uri descriptionUri, IPAddress address, IEnumerable<string> services)
@ -464,6 +476,104 @@ namespace MediaBrowser.Dlna.Ssdp
}
}
private void CreateUnicastClient()
{
if (_unicastClient == null)
{
try
{
_unicastClient = new UdpClient(_unicastPort);
}
catch (Exception ex)
{
_logger.ErrorException("Error creating unicast client", ex);
}
try
{
UnicastSetBeginReceive();
}
catch (Exception ex)
{
_logger.ErrorException("Error in UnicastSetBeginReceive", ex);
}
}
}
private void DisposeUnicastClient()
{
if (_unicastClient != null)
{
try
{
_unicastClient.Close();
}
catch (Exception ex)
{
_logger.ErrorException("Error closing unicast client", ex);
}
_unicastClient = null;
}
}
/// <summary>
/// Listen for Unicast SSDP Responses
/// </summary>
private void UnicastSetBeginReceive()
{
var ipRxEnd = new IPEndPoint(IPAddress.Any, _unicastPort);
var udpListener = new UdpState { EndPoint = ipRxEnd };
udpListener.UdpClient = _unicastClient;
_unicastClient.BeginReceive(UnicastReceiveCallback, udpListener);
}
/// <summary>
/// The UnicastReceiveCallback receives Http Responses
/// and Fired the SatIpDeviceFound Event for adding the SatIpDevice
/// </summary>
/// <param name="ar"></param>
private void UnicastReceiveCallback(IAsyncResult ar)
{
var udpClient = ((UdpState)(ar.AsyncState)).UdpClient;
var endpoint = ((UdpState)(ar.AsyncState)).EndPoint;
if (udpClient.Client != null)
{
var responseBytes = udpClient.EndReceive(ar, ref endpoint);
var args = SsdpHelper.ParseSsdpResponse(responseBytes);
args.EndPoint = endpoint;
OnMessageReceived(args);
UnicastSetBeginReceive();
}
}
private async void SendUnicastRequest(string request)
{
if (_unicastClient == null)
{
return;
}
_logger.Debug("Sending unicast search request");
byte[] req = Encoding.ASCII.GetBytes(request);
var ipSsdp = IPAddress.Parse(SSDPAddr);
var ipTxEnd = new IPEndPoint(ipSsdp, SSDPPort);
for (var i = 0; i < 3; i++)
{
if (i > 0)
{
await Task.Delay(50).ConfigureAwait(false);
}
_unicastClient.Send(req, req.Length, ipTxEnd);
}
}
private readonly object _notificationTimerSyncLock = new object();
private int _aliveNotifierIntervalMs;
private void ReloadAliveNotifier()
@ -511,5 +621,11 @@ namespace MediaBrowser.Dlna.Ssdp
}
}
}
public class UdpState
{
public UdpClient UdpClient;
public IPEndPoint EndPoint;
}
}
}